Casing-head.



No..78e,ses.

UNITED STATES Patented April 11, 1905.

PATENT OFFICE.

CLARENCE C. POOLE, OF FINDLAY, OHIO, ASSIGNOR TO WILLIAM L DAVID, OFFINDLAY, OHIO.

oAslNe-HEAD.

SPECIFICATION forming part of Letters Patent N o; 786,838, dated April11, 1905. Application filed .Tune 22, 1904;. Serial No. 218.736.

T0 all whom t may concern:

Beit known that I, CLARENCE C.' POOLE, of Findlay, in the county ofHancock and State of Ohio, have invented new and useful Improvements inCasing-Heads, of which the following is a specification. Y y

My invention relates to certain new and useful improvements in oil-wellcasing-heads, and has for its object to produce a casing-head havingoppositely-disposed projecting arms to which the legs of a pumpingjackmay be clamped.

A further object of this invention is to provide such projecting armswith depending lugs at their outer extremities to prevent the legs ofthe pumping-jack becoming accidentally disengaged therefrom. l

With these and other objects in view my invention consists in the noveldetailsof construction and combination of parts to be fully described inthe following specification and clearly set forth in the claims.

Referring to the accompanying drawings, in which like characters ofreference indicate similar parts throughout the several views, Figure 1is' a perspective view of my vimproved casing-head, showing in dottedlines the position to be occupied by the legs of the pumping-jack. Fig.2 is a central sectional view of a modified form of casing-head in whichthe outwardly-projecting arms are made separate from the casing-headproper and are threaded in apertures thereof; and Fig. 3 is an endelevation of yone of the arms, showing a fragment of the casing-headshell.

In the drawings, 1 represents a casing-head shell provided with athreaded mouth 2 to be connected to the top section of the casing and anannular rabbet 3 about its upper edge forming a cover-seat.

4 is a covering adapted to fit snugly in the seat 3 and provided with aninclined upper face to be engaged by the ends of set-screws 5, threadedin the shell 1 to keep the coverring in position and tighten itsengagement with the shell. A sleeve 6 of such bore as to closely iitover the top section of the well-tubing and prevent the collar thereonpassing through is seated in the annular rabbet 7 in the upper edge ofthe cover-ring 4. One or more threaded outlets 8 are formed in the Y areformed on the extreme outer ends of arms 9 and are provided with curvedouter surfaces to permit of the pumping-jack legs being readily placedon the arms 9 and clasped thereto, but also having straight inner edgesto prevent said legs slipping ,Off by accident.

When thus secured, the pumping-jack is given a rigid connection with thecasing, and the legs thereof being clamped on the arms 9 between theshoulders 10 and the lugs l1 are locked against displacement.

In some cases it maybe found desirable to form the arms 9 separate fromthe shell, and .this may be done as shown in Fig. 9, where the arms 9are threaded in the shell 1, and the shoulders 10 form sockets therefor.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a casing-head, a shell, oppositely-disposed arms projectingtherefrom, and depending lugs on the outer ends of the arms,substantially as described.

2. 1In a casing-head, a shell, oppositely-disposed arms circular incross-section projecting therefrom, and depending lugs on the eX- tremeouter ends of the arms, said lugs having curved outer surfaces andstraight inner surfaces, substantially as described.

3. Inacasing-head, a shell, arms projecting therefrom, and dependinglugs on the arms.

4. In a casing-head, a shell, oppositely-disposed arms projectingtherefrom and threaded thereto, and depending lugs on the outer ends ofthe arms, substantially as described.

5. In a casing,a shelha cover therefor,means for removably securing thecover, arms Aprojecting from the shell, and lugs on the arms.

6. In a casing, ashell, a seat formed therein, a cover adapted to restin the seat, means for securing the cover, arms projecting from theShell, and ings on the arms.

7. Inaeasingashelhaeover therefor,means carried by the shell forsecuring the cover, arms projecting from the shell, and lugs on thearms.

8. In a easing, a shell, a cover therefor, set- Serews carried by theshell for securing the cover, arms projecting from the shell, and lugson the arms.

9. Inacasingashell, arms projecting therefrom, and lugs on the arms,said lugs having curved edges.

10. Inacasing,ashell,arms projecting therefrom, and lugs on the arms,said lugs having curved outer edges.

11. In a easing ashelLarms projecting therefrom, and lugs on the arms,each of said lugs having one edge curved and its opposite edge straight.

12. In a easing,a shelharms projecting therefrom,lugs on the arms, saidlugs having curved outer edges and straight inner edges.

In testimony whereof I have signed this specification, in the presenceof two witnesses, Whose'names are subscribed hereto, on the 23d day ofMay, A. D. 1904.

CLARENCE C. POOLE.

IVitnesses:

T. GLEN CARPENTER, GEO. H. IHELrs.

